Saturday, February 9, 2013

Characteristics of Living Things


How to prepare hand-out



Characteristics of Living Things
Prepared By:
Butch J. Viñas BSED 2A
Partido State University
College Of Education
bjvinas@gmail.com



"Life has its own hidden forces which you can only discover by living. "-Soren Kierkegaard




Characteristics Of Living Things
Living Things Have Different Levels of Organization:
      Living things must be able to organize simple substances into complex ones.
      Living things organize cells at several levels:
 Tissue - a group of cells that perform a common function.
      Organ - a group of tissues that perform a common function.
      Organ system - a group of organs that perform a common function.
      Organism - any complete living thing.

  Made up of Cells
      Unicellular (one cell)
   - ex. Bacteria
Multicellular (many cells)
    - ex. Animals, plants
Unicellular

Multicellular



All living things reproduce
      They produce new individuals similar to themselves.
      To replace the dead ones.
          Two Kinds of Reproduction:
      Sexual
Ø   two sex cells required (sperm and egg)
      Asexual
Ø   only one parent cell is needed


Reproduction

All living things grow and develop
      Increase in cell size and/or number
      Includes: development, aging, death
      Differentiation – cell specialization  for a certain job
Grow and Development in Human

Grow and Development in Plant

       Obtains & uses Energy
      Metabolism (sum of all chemical reactions)
            Anabolism- simple to complex
            (build –up rxns.)
            Catabolism – complex to simple
            (break-down rxns.)
      Heterotrophic (other feeding)
            vs. autotrophic (self-feeding)

Living Things Uses Energy

Responds to the Environment
  • .       Movement – internal or external
  • .      Irritability - ability to respond to  a stimulus

    Examples of stimuli :
  • sight, sound, touch, pressure, temperature, chemicals, color, light,
  •  Adaptability


Phototrophism
Sources:
      http://infohost.nmt.edu/~klathrop/7characterisitcs_of_life.htm
      staffweb.psdschools.org/shunter/.../5%20Characs_Taxonomy.ppt
      jmazzabiology.com/charlivthings1.ppt
      Google Images
      www.cliffsnotes.com › Sciences › Biology